ZHCSLU2B December 2021 – October 2023 LM63460-Q1
PRODUCTION DATA
Figure 9-20 shows the schematic diagram of a synchronous buck regulator with an output voltage set at 3.3 V and a rated load current of 6 A. The RT resistor of 33.2 kΩ sets the switching frequency at 400 kHz.
In this example, the target half-load and full-load efficiencies are 94.5% and 91.5%, respectively, based on a nominal input voltage of 12 V that ranges from 4 V to 36 V. The switching frequency is set at 400 kHz. The BIAS input is connected to the 3.3-V output, thus reducing IC bias power dissipation and improving efficiency performance.